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Hilary Duffjust made her relationship with Jason Walsh Instagram official! 

The Younger star and her personal trainer have been enjoying each other's company for quite a bit of time now, but it wasn't until Sunday morning that Hilary confirmed the lovebirds were actually in relationship.

Sharing a sweet black and white snapshot of herself locking lips with Jason, Hilary set our hearts soaring by captioning it, "Date night with J."

Back in June, E! News reported Duff and Walsh were "casually dating," but if her latest Instagram is any evidence, Hilary's summer romance sure didn't fade when the temperatures started dropping. 

Hilary Duff, Jason Walsh, PDA

Instagram

In late September, Hilary fielded questions about her blossoming relationship with the hunky fitness guru during an appearance on Good Day New York

And although the 29-year-old mother kept quiet when it came to confirming or denying their relationship status, she couldn't help but gush at least a little bit about her new man.

"We've known each other for a really long time and he's a great guy and we have a lot of fun together," Duff explained. "It's nice to have that excitement in my life."

This is the first time Hilary taken a relationship public since splitting from hockey player Mike Comriein 2014. The pair share a 4-year-old son named Luca

Something tells us Lizzie McGuire would be so proud!